With such a huge selection of audio cables available these days it's hard to know how to choose the correct one and how it will affect the sound of your system. In a nutshell it really all comes down to simple rules of AC current behaviour.
The following article written by
Al Keltz will talk about impedance, resistance, capacitance, inductance. And I highly recommend that before spending thousands of dollars on your audio cables, you should understand these concepts and how they affect the signal traveling between your source (Dac/pre-amp) and your input (Amp) the joining "cables capacitance and "resistance" can and will alter the impedance from output to input. this is one of the many reasons why people will hear differences in cables.